/// <summary>
/// Factory
/// </summary>
public static SsmBasicLogger GetInstance(
string configurationDirectory,
Stream stream)
{
Trace.WriteLine("SsmBasicLogger.GetInstance");
SsmBasicLogger instance = new SsmBasicLogger(configurationDirectory, stream);
return(instance);
}
/// <summary>
/// Stop logging, in response to "Suspend" power mode event.
/// </summary>
/// <remarks>
/// For use by SsmLogger and test code only.
/// </remarks>
internal void Suspend()
{
Trace.WriteLine("### PowerModeChanged: Suspend");
this.TryStateTransition(State.Closing);
SsmBasicLogger localLogger = this.logger;
if (localLogger != null)
{
Trace.WriteLine("SsmLogger.SystemEvents_PowerModeChanged: stopping logger");
localLogger.BeginStopLogging(Logger_LoggingStoppedForSuspend, null);
}
}
/// <summary>
/// Complements BeginStopLogging
/// </summary>
public void EndStopLogging(IAsyncResult asyncResult)
{
Trace.WriteLine("SsmLogger.EndStopLogging");
SsmBasicLogger localLogger = this.logger;
if (localLogger != null)
{
Trace.WriteLine("SsmLogger.EndStopLogging: invoking SsmBasicLogger.EndStopLogging()");
localLogger.EndStopLogging(asyncResult);
}
}
private SsmLogger(
string configurationDirectory,
string ssmPortName)
{
this.configurationDirectory = configurationDirectory;
this.ssmPortName = ssmPortName;
Stream stream = this.GetDataStream(true);
this.logger = SsmBasicLogger.GetInstance(this.configurationDirectory, stream);
this.TryStateTransition(State.Ready);
this.logger.LogError += this.Logger_LogError;
#if !PocketPC
this.powerModeChangedEventHandler = new Microsoft.Win32.PowerModeChangedEventHandler(SystemEvents_PowerModeChanged);
Microsoft.Win32.SystemEvents.PowerModeChanged += this.powerModeChangedEventHandler;
#endif
}
/// <summary>
/// Stops logging
/// </summary>
public IAsyncResult BeginStopLogging(AsyncCallback callback, object asyncState)
{
Trace.WriteLine("SsmLogger.BeginStopLogging");
this.TryStateTransition(State.Closing);
StopLoggingAsyncResult asyncResult = new StopLoggingAsyncResult(callback, asyncState);
SsmBasicLogger localLogger = this.logger;
if (localLogger != null)
{
Trace.WriteLine("SsmLogger.BeginStopLogging: stopping logger");
return(localLogger.BeginStopLogging(Logger_LoggingStopped, asyncResult));
}
else
{
Trace.WriteLine("SsmLogger.BeginStopLogging: logger gone, returning trivial AsyncResult");
AsyncResult result = new AsyncResult(callback, asyncState);
result.Completed();
//ThreadPool.QueueUserWorkItem(new WaitCallback(delegate { result.Completed(); }));
return(result);
}
}
/// <summary>
///
/// </summary>
private void ReopenStream()
{
if ((this.logger != null) && this.logger.IsLogging)
{
Trace.WriteLine("SsmLogger.TimerCallback: logger is already running.");
return;
}
Trace.WriteLine("SsmLogger.TimerCallback: Attempting restart.");
Stream stream = this.GetDataStream(false);
if (stream == null)
{
Trace.WriteLine("SsmLogger.ReopenStream: Unable to open stream, will try again in one second.");
if (!this.TryStateTransition(State.Resyncing))
{
Trace.WriteLine("SsmLogger.ReopenStream: Going to reset the timer anyway...");
}
this.ScheduleRestart(TimeSpan.FromSeconds(1));
return;
}
Trace.WriteLine("SsmLogger.ReopenStream: Stream opened.");
this.logger.SetEcuStream(stream);
this.StartLogging();
if (!this.TryStateTransition(State.Ready))
{
Trace.WriteLine("SsmLogger.ReopenStream: Transition to Ready was illegal, stopping.");
SsmBasicLogger localLogger = this.logger;
if (localLogger != null)
{
localLogger.BeginStopLogging(Logger_LoggingStopped, null);
}
}
}
